PTO not disengaging

are you saying that and I assume that you have a 2 stage clutch with the clutch all the way in the pto spins with power not just from things spinning where there is no real power to the pto shaft. if that is what you are saying that is no pin. but I have a partial pin shear at the engagement/disengagement pto shifter where it comes in contact with the trans. housing. I used a pin inside a pin when I replaced it.

It could be any one of the roll pins in the clutch linkage, from the pedal to the clutch release bearing fork.  Since the PTO clutch releases at the very end of the pedal travel, a sheared roll pin anywhere could be preventing the full pedal movement from being transferred to the next stage of the linkage.  It can be darned difficuylt to visually identify a sheared/broken pin, too.  You may have to scribe a line across the joint and have someone else push the pedal while you look very closely (even with a magnifier) to see if there is slop indicating a bad pin.

There are better roll pins made, called spiral spring pins, or you can nest two standard roll pins as Mttoptv suggested.

If the PTO is working OK and stops turning when you push the clutch in, my guess is a broken shift lump under the seat inside the gear box. This is a common problem

Tommy

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